| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 8 | |
| #2 | United Kingdom | 4 | |
| #3 | Canada | 2 | |
| #4 | France | 2 | |
| #5 | Switzerland | 1 |
| # | Industry | |
|---|---|---|
| #1 | Materials and metallurgy | |
| #2 | Thermal processes | |
| #3 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Metal tempering | |
| #2 | Furnaces | |
| #3 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Bellis Arthur E | 9 |
| #2 | Collins Charles S | 5 |
| #3 | Louis Roessel | 1 |
| #4 | Treating Company The Bellis He | 1 |
| #5 | Roessel Louis | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB237337A | Improvements in or relating to the heat treatment of metals and metallic articles | |
| GB220837A | An improved method of heat treating metals and furnace therefor | |
| US1526894A | Method of heat-treating cutting tools | |
| US1520744A | Bath for heat-treating metals | |
| GB170281A | Improved pots or crucibles | |
| GB168887A | Improvements in or relating to crucibles | |
| US1485151A | Furnace | |
| US1399044A | Heat treatment of metals | |
| US1489023A | Pot or crucible | |
| US1573535A | Pot or crucible | |
| US1491510A | Fused eutectic salt bath | |
| US1482887A | Crucible | |
| CA243332A | Fused eutectic salt bath | |
| CA242440A | Furnace |